How to install latest kernel on CentOS Linux 7 using yum command

To install the latest kernel on CentOS Linux 7 using the yum package manager, you can use the following steps:

1. Add the ELRepo repository:
   sudo yum install https://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm
   This adds the ELRepo repository, which contains the latest kernels for CentOS 7.

2. Install the latest kernel:
   sudo yum --enablerepo=elrepo-kernel install kernel-ml
   This installs the latest kernel (labeled kernel-ml) from the ELRepo repository.

3. Update the GRUB bootloader configuration:
   sudo grub2-mkconfig -o /boot/grub2/grub.cfg
   This updates the GRUB bootloader configuration to include the new kernel.

4. Reboot the system:
   sudo reboot
   This reboots the system and loads the new kernel.

You can verify the installation by checking the kernel version after the reboot:

uname -r

This command should display the version of the new kernel that you have installed.

It is recommended to install the latest kernel to benefit from the latest security updates and performance improvements. However, keep in mind that installing a new kernel carries a certain risk of potential issues, so it is always a good idea to test the new kernel thoroughly before deploying it in production environments.

Note: These steps assume that you are using CentOS Linux 7 and the yum package manager. If you are using a different Linux distribution or a different package manager, you may need to use different commands to install the latest kernel.